That is terrible that he is harming your children to get back at you. How ridiculous!!. My STBXAH did almost the same thing. He told my kids (8 and 5) that mommy was going to go to prison because he had "dirt" on me and my coworkers. My 5 year-old cried that night asking when he was going to see me when mommy was in jail. I told them daddy was just angry and saying things he didn't mean. Mommy wasn't going to prison because mommy didn't do anything wrong. Its hard enough that they have to deal with an alcoholic parent but to scare them on top of it all just takes the cake. It shows how truly sick they are!